Picture8

13. U ml	A, {a.h,c,(ltL\f,g},	n a,={c}. i*i
14. U iti	A, = C,	n a,=0. lei
15. a)	U A, = (1,4), i*i	fi A, = (2, 3), że/
b)	U a, = <0, 2), mi	n a, = {i}, lei
c)	U A, = <3, 4),	^n ■*■-{!}•
d)	U At = (-1, 1),	n a, = 0,
e)	U K(A, r) = R^2 re R,	n K(A, r) = {A}, re R,
	U K(A,r) = {(x,y)e R^2:: ye R	c e (-/•, r)},
	f| K(A, r) = 0. ye R

IK- aM x B = {(-1, 3), (-1,-5), (O, 3), (0. -5), (2, 3), (2, -5)}, BxA = {(3,-1), (3, 0), (3, 2), (-5, -1), (-5, 0), (-5, 2)}, b)AxB = {(a, x), (a,y), (b, x), (b,y), (c, x), (c,.v)},

BxA = {(x, a), (x, b), (x, c), (y, a), (y, b), (y, c)}.

a y

-1

A) A x B= {(x, >’) e R": jc e

a y e (-oo.

(

{(.v, V) c !<•’: V c

X II

V

n i

— i Aji, 4

A n}

i y	71
n 4	ł* ** ^1 -7t 4 4 n 4
	-271

c)A x B= {(x,y) e R^:: x e {-I, 2, 3} a j = <0, 2)}

y

2 ■■

2	3
	f TC 71 ^
U	- -
/	U 2)

A

\-yfs ,\ + -j5 , „

—— )U(-—-,+co)}